The first recording was made live at Montreal Forum on 13 July 1983, the second was recorded live at the Tokyo Dome, 16 May 1990. The two don't sound very different really, but it's a nice item for fans nonetheless. The added attraction of it being a picture disc drew me in - after all, there have been quite a few picture disc releases of Bowie during the last decade.
My collection: 7" single no. 7116
Found: Sounds, Delft, 27 January 2024
Tracks: 'Heroes (live at Montreal Forum, Montreal, Canada, 13th July 1983)' / 'Heroes (live at Tokyo Dome, Tokyo, Japan, 16 May 1990)'